The Equerry

As the Royal Equerry, Harry's place of work is Buckingham Place,
the very heart of the British nation, so you might deduce from this
that his employer is illustrious in the extreme.

Harry has known Mycroft Holmes for some time, but it is Holmes
the younger who he needs help from in this hour of need.

His employer has a problem, you see.

A matter's come to light of a delicate and potentially criminal
nature. It is of the highest security and therefore a matter of
trust.

A woman by the name of Ms. Adler has made it know that she has
photographs of a person of significance to Harry's employer, but he
would prefer not to say anything more at this time.

They have kept a lot of people successfully in the dark about
this little fact, so one can only hope that Sherlock Holmes is as
good as he seems to think he is. Harry certainly expected him to be
taller from his photographs, but the portfolio of cases he has
worked on as documented by Dr. John Watson, formerly of the Fifth
Northumberland Fusiliers, and in particular the case of the
Aluminium Crutch, is very encouraging... even if he has no idea why
his cigarette lighter should be required for the successful
retrieval of potentially scandalous materials.